![Cofacial Dicobalt Complex of a Binucleating Hexacarboxamide Cryptand Ligand DOI: 10.1021/ic100395a](http://s1.studyres.com/store/data/008101107_1-f8a92157000779b89596bfaca072ab7f-300x300.png)
Cofacial Dicobalt Complex of a Binucleating Hexacarboxamide Cryptand Ligand DOI: 10.1021/ic100395a
... centers, ruling out the presence of a second axial ligand. The distance between the metal centers is 6.4078 Å (avg). The structure of 3 reveals that Kþ ions bridge the dicobalt cryptate units, resulting in an extended three-dimensional structure. This is in analogy to protonated cryptands, which ma ...
... centers, ruling out the presence of a second axial ligand. The distance between the metal centers is 6.4078 Å (avg). The structure of 3 reveals that Kþ ions bridge the dicobalt cryptate units, resulting in an extended three-dimensional structure. This is in analogy to protonated cryptands, which ma ...
Chapter 2: Nomenclature and Structure
... 5. homologous series: add a carbon to chain to continue series a. methylene –(CH2)6. isomer a. constitutional isomers: same formula, different connectivity i. butane vs isobutene, 1-chloro vs 2-chloropropane ii. isomers of C4H10 (2), C5H12 (3), C6H14 (5) b. stereo isomers (chapter 3 and later) 7. co ...
... 5. homologous series: add a carbon to chain to continue series a. methylene –(CH2)6. isomer a. constitutional isomers: same formula, different connectivity i. butane vs isobutene, 1-chloro vs 2-chloropropane ii. isomers of C4H10 (2), C5H12 (3), C6H14 (5) b. stereo isomers (chapter 3 and later) 7. co ...
Chapter 2 Game Review
... Which type of bonds attracts water molecules to each other, causing surface tension and slowing the rate of evaporation? ...
... Which type of bonds attracts water molecules to each other, causing surface tension and slowing the rate of evaporation? ...
Alkane
... For RX compound, when X = Cl or F ,the b.p. will be higher than alkane which have the same molecular mass due to the dipole-dipole interaction between the molecules. Solubility As the interaction between water and RX are quite different, (H-bond and dipole-dipole),they are only sightly soluble in wa ...
... For RX compound, when X = Cl or F ,the b.p. will be higher than alkane which have the same molecular mass due to the dipole-dipole interaction between the molecules. Solubility As the interaction between water and RX are quite different, (H-bond and dipole-dipole),they are only sightly soluble in wa ...
Year 1 Foundation course, section B2
... Aromatic compounds are stable cyclic systems of conjugated double bonds. There must be 2n+1 double bonds for the system to be stable. You can illustrate them in two ways, the first of which is more accurate. The structure consists of a system of six sigma (s) bonds with a p bond system on top which ...
... Aromatic compounds are stable cyclic systems of conjugated double bonds. There must be 2n+1 double bonds for the system to be stable. You can illustrate them in two ways, the first of which is more accurate. The structure consists of a system of six sigma (s) bonds with a p bond system on top which ...
1 - University of Missouri
... utilize your course textbook (pp. 764-766), if you need assistance. Please note that the frequency given below should be exact (one number), not a range. Use the frequency of the center of the band at its strongest point. Then, on the spectrum itself, mark the characteristic bands at their strongest ...
... utilize your course textbook (pp. 764-766), if you need assistance. Please note that the frequency given below should be exact (one number), not a range. Use the frequency of the center of the band at its strongest point. Then, on the spectrum itself, mark the characteristic bands at their strongest ...
Chemistry of Carbon
... carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. The size of hydrocarbon molecules influences their properties. For example, it influences their boiling and melting points. As a ...
... carbon-based compounds. Nonetheless, they can vary greatly in size. The smallest hydrocarbons have just one or two carbon atoms, but large hydrocarbons may have hundreds. The size of hydrocarbon molecules influences their properties. For example, it influences their boiling and melting points. As a ...
"Supramolecular chemistry is the chemistry of the intermolecular
... Strong H-bonds are formed when there is electron density deficiency in the donor or an excess of electron density in the acceptor or when configuration or conformation of the molecule forces the donor and acceptor closer than normal H-bonding distance Moderate bonds (most common type) form typically ...
... Strong H-bonds are formed when there is electron density deficiency in the donor or an excess of electron density in the acceptor or when configuration or conformation of the molecule forces the donor and acceptor closer than normal H-bonding distance Moderate bonds (most common type) form typically ...
United States Patent Boyle et aI.
... or R, and Rs. form a fused. 5- to 6-membered ring. the ring is a 6-membered ring. Most preferably. when Rl and R 2 , R3 and R4 , Rs and ~, or R, and Rs, form a ring, it is a 6-membered carbocyclic ring. i.e.• a benzene ring. In a particularly preferred embodiment. Rl through Rs are independently hyd ...
... or R, and Rs. form a fused. 5- to 6-membered ring. the ring is a 6-membered ring. Most preferably. when Rl and R 2 , R3 and R4 , Rs and ~, or R, and Rs, form a ring, it is a 6-membered carbocyclic ring. i.e.• a benzene ring. In a particularly preferred embodiment. Rl through Rs are independently hyd ...
Supramolecular Assemblies Built from Lanthanide
... bonds. Three complexes were obtained with the enantiopure α-amino acid L-methionine (L-me), all of which are chiral. In [Yb(L-me)(H2O)7]·CB6·3NO3·7H2O (3) and [Dy(L-me)(H2O)7]4[Dy(NO3)2(H2O)5]·4CB6·13NO3·29H2O (4), the metal ions are bound to one monodentate carboxylate and seven water molecules. Th ...
... bonds. Three complexes were obtained with the enantiopure α-amino acid L-methionine (L-me), all of which are chiral. In [Yb(L-me)(H2O)7]·CB6·3NO3·7H2O (3) and [Dy(L-me)(H2O)7]4[Dy(NO3)2(H2O)5]·4CB6·13NO3·29H2O (4), the metal ions are bound to one monodentate carboxylate and seven water molecules. Th ...
Coordination properties of the diethyl 2-quinolilmethylphosphonate ligand with chloride
... preferences of the resulting species. Additionally, our interest is the study of stability in solution metal(II) compounds. Unfortunately, we have not succeeded in preparing crystals suitable for the X-ray studies of the complexes. Physicochemical properties of the compounds and their possible struc ...
... preferences of the resulting species. Additionally, our interest is the study of stability in solution metal(II) compounds. Unfortunately, we have not succeeded in preparing crystals suitable for the X-ray studies of the complexes. Physicochemical properties of the compounds and their possible struc ...
WHAT IS MORPHINE -- ACTIVITY #1 What is morphine? What is it
... alcohols are resistant to oxidation with acidified potassium dichromate(VI), K. Aldehyde - Aldehydes have a hydrogen and an alkyl (or aromatic) group attached to a carbonyl function. Aldehydes can be shown in text as: RCHO. Aldehydes are easily oxidised to carboxylic acids, and they can be reduced t ...
... alcohols are resistant to oxidation with acidified potassium dichromate(VI), K. Aldehyde - Aldehydes have a hydrogen and an alkyl (or aromatic) group attached to a carbonyl function. Aldehydes can be shown in text as: RCHO. Aldehydes are easily oxidised to carboxylic acids, and they can be reduced t ...
review sheet plus practice problems
... What is the selectivity for brominations vs. fluorinations? Why are allylic radicals more stable than other types? Draw resonance for all allylic radicals. What is the definition of oxidation? Which compound is at a higher oxidation state? Is this reaction an oxidation, reduction, or neither? Descri ...
... What is the selectivity for brominations vs. fluorinations? Why are allylic radicals more stable than other types? Draw resonance for all allylic radicals. What is the definition of oxidation? Which compound is at a higher oxidation state? Is this reaction an oxidation, reduction, or neither? Descri ...
1012_4th Exam_1020619 - NTOU-Chem
... 27) Define "conformation". A) Conformations are different structural representations of the same molecule. B) Conformations are different arrangements of bonds in space C) Conformations are two enantiomers. D) Conformations are all possible structural isomers for a given molecular formula E) Conform ...
... 27) Define "conformation". A) Conformations are different structural representations of the same molecule. B) Conformations are different arrangements of bonds in space C) Conformations are two enantiomers. D) Conformations are all possible structural isomers for a given molecular formula E) Conform ...
Benzylamine reacts with nitrous acid to form unstable
... 2. What product is formed when aniline is first diazotized and then treated with Phenol in alkaline medium? 3. How is phenyl hydrazine prepared from aniline? 4. What is the IUPAC name of a tertiary amine containing one methyl, one ethyl and one n-propyl group? 5. Explain why silver chloride is solub ...
... 2. What product is formed when aniline is first diazotized and then treated with Phenol in alkaline medium? 3. How is phenyl hydrazine prepared from aniline? 4. What is the IUPAC name of a tertiary amine containing one methyl, one ethyl and one n-propyl group? 5. Explain why silver chloride is solub ...
CH - YSU.edu
... 13. (5 pts) Explain using diagrams why cis-1,3-dimethylcyclohexane is thermodynamically more stable than trans-1,3-dimethylcyclohexane. ...
... 13. (5 pts) Explain using diagrams why cis-1,3-dimethylcyclohexane is thermodynamically more stable than trans-1,3-dimethylcyclohexane. ...
4.9 Preparation of Alkyl Halides from Alcohols and Hydrogen Halides
... hybridized carbon is attached to C+, but is not availabe when H is attached to C+. Therefore,alkyl groups stabilize carbocations better than H does. ...
... hybridized carbon is attached to C+, but is not availabe when H is attached to C+. Therefore,alkyl groups stabilize carbocations better than H does. ...
ch12 by dina
... Esters react with two molar equivalents of a Grignard reagent to yield a tertiary alcohol A ketone is formed by the first molar equivalent of Grignard reagent and this immediately reacts with a second equivalent to produce the tertiary alcohol ...
... Esters react with two molar equivalents of a Grignard reagent to yield a tertiary alcohol A ketone is formed by the first molar equivalent of Grignard reagent and this immediately reacts with a second equivalent to produce the tertiary alcohol ...
Chemistry 209 - Experiment 3, Spring 2003
... In this lab we will again examine how the structure of a molecule determines the properties of the compound. In particular, you will explore some of the properties of a small group of oxygen-containing compounds. The reactivity of each compound with a series of reactants (3 M HCl(aq), 3 M NaOH(aq), ...
... In this lab we will again examine how the structure of a molecule determines the properties of the compound. In particular, you will explore some of the properties of a small group of oxygen-containing compounds. The reactivity of each compound with a series of reactants (3 M HCl(aq), 3 M NaOH(aq), ...
Light color and different dyestuff
... wavelengths of electromagnetic radiation (light) differently from other wavelengths. Normal daylight, or white light, is a mixture of all the wavelengths to which we can respond and some to which we cannot, in particular the infra‐red and ultra‐violet rays. We respond to wavelengths between about ...
... wavelengths of electromagnetic radiation (light) differently from other wavelengths. Normal daylight, or white light, is a mixture of all the wavelengths to which we can respond and some to which we cannot, in particular the infra‐red and ultra‐violet rays. We respond to wavelengths between about ...
Nomenclature
... • Alkenes are soluble in organic solvents and insoluble in water. • The C—C single bond between an alkyl group and one of the double bond carbons of an alkene is slightly polar. ...
... • Alkenes are soluble in organic solvents and insoluble in water. • The C—C single bond between an alkyl group and one of the double bond carbons of an alkene is slightly polar. ...
The flame ionization detector: A theoretical approach
... per ionization event, let alone the formation of a large assembly. It might be possible to concede a two-carbon reaction if methane and other single-carbon molecules behaved differently from those containing two or more carbons, but this is not observed, and methane is as sensitively detected at low ...
... per ionization event, let alone the formation of a large assembly. It might be possible to concede a two-carbon reaction if methane and other single-carbon molecules behaved differently from those containing two or more carbons, but this is not observed, and methane is as sensitively detected at low ...
Homoaromaticity
![](https://commons.wikimedia.org/wiki/Special:FilePath/Homotropylium_cation.gif?width=300)
Homoaromaticity in organic chemistry refers to a special case of aromaticity in which conjugation is interrupted by a single sp3 hybridized carbon atom. Although this sp3 center disrupts the continuous overlap of p-orbitals, traditionally thought to be a requirement for aromaticity, considerable thermodynamic stability and many of the spectroscopic, magnetic, and chemical properties associated with aromatic compounds are still observed for such compounds. This formal discontinuity is apparently bridged by p-orbital overlap, maintaining a contiguous cycle of π electrons that is responsible for this preserved chemical stability.The concept of homoaromaticity was pioneered by Saul Winstein in 1959, prompted by his studies of the “tris-homocyclopropenyl” cation. Since the publication of Winstein's paper, much research has been devoted to understanding and classifying these molecules, which represent an additional “class” of aromatic molecules included under the continuously broadening definition of aromaticity. To date, homoaromatic compounds are known to exist as cationic and anionic species, and some studies support the existence of neutral homoaromatic molecules, though these are less common. The 'homotropylium' cation (C8H9+) is perhaps the best studied example of a homoaromatic compound.